EP0578770A1 - Handle enclosure for valves. - Google Patents
Handle enclosure for valves.Info
- Publication number
- EP0578770A1 EP0578770A1 EP92910690A EP92910690A EP0578770A1 EP 0578770 A1 EP0578770 A1 EP 0578770A1 EP 92910690 A EP92910690 A EP 92910690A EP 92910690 A EP92910690 A EP 92910690A EP 0578770 A1 EP0578770 A1 EP 0578770A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- enclosure
- valve
- top wall
- handle
- panels
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
- 238000010276 construction Methods 0.000 claims description 8
- 239000002991 molded plastic Substances 0.000 claims description 3
- 239000004033 plastic Substances 0.000 description 5
- 229920003023 plastic Polymers 0.000 description 5
- 239000000463 material Substances 0.000 description 4
- 231100001261 hazardous Toxicity 0.000 description 3
- 238000012423 maintenance Methods 0.000 description 3
- 230000009286 beneficial effect Effects 0.000 description 2
- 239000012530 fluid Substances 0.000 description 2
- -1 polyethylenes Polymers 0.000 description 2
- 239000000126 substance Substances 0.000 description 2
- 239000004698 Polyethylene Substances 0.000 description 1
- 239000004743 Polypropylene Substances 0.000 description 1
- 230000003466 anti-cipated effect Effects 0.000 description 1
- 238000013475 authorization Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 229920001903 high density polyethylene Polymers 0.000 description 1
- 239000004700 high-density polyethylene Substances 0.000 description 1
- 238000001746 injection moulding Methods 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 229920001179 medium density polyethylene Polymers 0.000 description 1
- 239000004701 medium-density polyethylene Substances 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000000465 moulding Methods 0.000 description 1
- 229920001778 nylon Polymers 0.000 description 1
- 229920000573 polyethylene Polymers 0.000 description 1
- 229920001155 polypropylene Polymers 0.000 description 1
- 229920005989 resin Polymers 0.000 description 1
- 239000011347 resin Substances 0.000 description 1
- 230000000630 rising effect Effects 0.000 description 1
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
- F16K35/00—Means to prevent accidental or unauthorised actuation
- F16K35/10—Means to prevent accidental or unauthorised actuation with locking caps or locking bars
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
- Y10T137/00—Fluid handling
- Y10T137/6851—With casing, support, protector or static constructional installations
- Y10T137/7043—Guards and shields
- Y10T137/7062—Valve guards
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
- Y10T137/00—Fluid handling
- Y10T137/7069—With lock or seal
Definitions
- the present invention relates to the field of devices which are intended to preclude unauthorized operation of a valve; more specifically, the present invention relates to an enclosure for a valve handle intended to prevent operation of the valve until the enclosure is removed at the time further actuation is desired.
- Valves can be actuated with various types of rotatable handles, such as a round handle, T-shaped handle or a handle with several spokes, to an open position, closed position or a throttled position between open and closed as selected to control the flow of materials through a pipeline.
- a valve sometimes must be maintained in a fully open position in order to achieve the desired flow through a pipeline.
- a valve often must be adjusted to a throttled position (i.e. between open and closed) in order to achieve a selected rate of flow of materials through a pipeline. Further, however, it may be necessary to maintain a valve in a fully closed position so as to stop the flow of materials through a pipeline.
- any device of the foregoing type to include provision for accepting a lock so that the valve handle would be actuated to a changed position only upon appropriate authorization.
- OSHA Occupational Safety and Health Administration
- 29 CFR ⁇ 1910.147 entitled Control of Hazardous Energy Sources (Lockout/Tagout)
- the standard requires, inter alia, that an energy source having a line valve that is capable of being locked out must be locked out to insure that equipment being controlled cannot be operated until the lockout is removed.
- a lockout is defined in the regulation as a positive means such as a lock to hold an energy isolating device in the safe position and prevent energizing of machinery or equipment.
- the regulation is applicable to any source of electrical, mechanical, hydraulic, pneumatic, chemical, thermal or other energy.
- OSHA regulation will now require, for example, that a valve installed on a pipeline carrying an energy source to machinery or equipment must include some form of device so that the valve can be locked in the closed position during maintenance or service.
- valve guard has been sold by the assignee of this patent and other companies for use with valves having rotatable handles consisting of two molded plastic elements, each of a different structure, that are joined together by integral molded hinge elements.
- Our present invention relates to an improved guard for a valve handle that has utilitarian advantages not attainable by the above prior art devices .
- the present invention provides an enclosure for a valve handle comprising two semicircular hollow shell elements of identical construction which, when joined together, form a hinged enclosure for the handle of the valve that can be locked to restrict access to the handle.
- the two elements include structure to enable the enclosure to accommodate a valve of the type having a valve stem that extends through the handle.
- Fig. 1 is an exploded perspective view illustrating an enclosure for a valve handle of the present invention.
- Fig. 2 is a perspective view of the enclosure of Fig. 1 showing the two elements joined together.
- Fig. 3 is a plan view illustrating the bottom wall of the enclosure.
- Fig. 4 is a plan view of the open side of each element of the enclosure.
- Fig. 5 is a side view, with portions broken away, illustrating the enclosure installed about the handle of a valve of the type having a valve stem that extends through the handle.
- Fig. 6 is a perspective view illustrating the enclosure of the invention enclosing the handle of a second type of valve construction.
- FIGs. 1-4 illustrate the two enclosure-halfs 5,5 of a valve handle enclosure of the present invention.
- the enclosure-halfs 5,5 are both of exactly the same construction, each of them having all of the same structural elements so that the description of one is equally applicable to the other.
- Each enclosure-half 5 consists of a semicircular top wall 6, a semicircular bottom wall 7 spaced from the top wall, and a side wall 8 that connects the top wall and bottom wall about their outer curved perimeter.
- This provides an enclosure-half comprising a hollow shell having a closed semicircular side formed by side wall 8 and an open side 9 along the straight diametral edges 10 and 11 of the top wall 6 and bottom wall 7, respectively.
- a semicircular opening 15 is defined in bottom wall 7, centered along edge 11 of the bottom wall. The openings 15 of the two enclosure-halfs 5,5 will combine to form a circular opening that surrounds a valve stem when the two halfs are joined together as described later in this specification.
- a semicircular knockout element 17 is formed along top wall 6, centered along edge 10 of the top wall. As best seen in Fig. 4, knockout element 17 is offset from the plane of top wall 6 and connected to the top wall by a thin web 18 extending around the edge of element 17.
- the knockout elements 17 of the enclosure-halfs 5,5 can be removed from each enclosure-half to form a circular opening in the top wall for the purpose described later in this specification.
- the knockout elements also can be defined by a groove in the top wall to be coplanar with the top wall, and can be offset above (as illustrated) or below the plane of the top wall.
- a single panel 20 extends from side wall 8 of each enclosure-half 5 along one end of open side 9 thereof.
- Panel 20 includes a central aperture 21.
- two spaced panels 20 extend from side wall 8.
- the two panels 20 at this end of the open side each have an aperture 21, the two apertures being aligned with each other.
- the two panels 20 are spaced apart a distance equal to or slightly greater than the thickness of the single panel 20 at the opposite end of the side wall 8, and are located equidistant from the centerline of side wall 8.
- the panels 20 each have a portion that extends beyond edges 10 and 11 of the top wall and bottom wa .
- the apertures 21 that are formed in the panels 20 are centered along the edges 10 and 11 of the top and bottom walls of each enclosure- half 5.
- top wall 6 along the open side of enclosure-half 5 is formed with a slot 26 recessed therein on one side of knockout element 17 and a tab 27 on the opposite side of knockout element 17 that projects from end wall 25.
- the enclosure-halfs 5,5 are molded of suitable plastic material so that each of their component elements, walls 6, 7, 8, knockout elements 17, panels 20 and tabs 27 and 30, are formed as integral elements of a one piece unit along with apertures 15 and slots 26 and 29.
- suitable plastics include, for example, polyethylenes such as medium and high density polyethylene, polypropylenes and nylons, although other resins can be employed.
- the plastic selected for the enclosure-halfs should be capable of withstanding a suitable range of ambient temperatures and exhibit chemical resistance appropriate for valves located in various environments, both indoors and outdoors.
- the enclosure-halfs can be formed by injection molding, and one of the useful advantages of the enclosure-half construction shown in the drawings is that they can be made with relatively inexpensive molds and the molds can be easily parted.
- the enclosure-halfs can be made in several sizes, each intended to be used with a range of valve handle sizes.
- enclosure-halfs 5 with an interior space of 2.5 inches to 8.5 inches in diameter and about 1 to 2 inches high can be made that will enable enclosing the handles of most sizes of valves.
- Fig. 3 This is accomplished by interleaving the single panel 20 at one end of one enclosure-half 5 between the two spaced panels 20 at the opposite end of the other enclosure-half 5 so that apertures 21 extending through the interleaved three panels will be aligned with one another, following which a hinge pin 40 is inserted between the three aligned apertures 21 so as to join the two enclosure-halfs together.
- the hinge pin 40 preferably is a rivet construction so as to provide a tamperproof hinge connection between the two enclosure- halfs. Also, however, other type of hinge pin constructions can be employed. After being joined by a hinge pin in this fashion, it will be noted from Fig.
- Fig. 3 which is a plan view of the bottom of enclosure 55, the semicircular openings 15 in each enclosure-half 5 combine to form a circular opening that will extend about a valve stem as described later in this specification.
- the knockout elements 17 of each enclosure- half 5 form a centrally located circular knockout member.
- the knockout elements 17 each can be separated from the enclosure-halfs 5,5 either manually or with a tool such as a pair of pliers when it is desired to include an opening along the top wall of enclosure 55.
- a tool such as a pair of pliers
- the single panel 20 of one enclosure-half is interleaved between the two spaced panels 20 of the other enclosure-half, and the openings 21 of the three panels 20 are aligned with one another so as to receive the hasp of a lock.
- Fig. 5 illustrates a rising stem type of valve 60 that includes a valve body 61 having an internal flowway (not shown), a yoke structure 62 attached to the valve body, a threaded valve stem 63 that can be moved up and down through the yoke structure, and a handwheel 64 secured to the upper end of yoke structure 62 which is rotated manually to raise and lower valve stem 63 to open, close and throttle the valve.
- valve 60 is the type of valve that includes a valve stem which extends beyond the handwheel, or round handle, 64.
- Pipe 65 is connected to one end of valve body 61 and pipe 66 to the other end so that the valve can be used to control the flow of fluid through pipes 65 and 66.
- FIG. 5 also illustrates enclosure 55 installed on valve 60 so as to prevent unauthorized access to handwheel 64 of the valve.
- Enclosure 55 is inserted about handwheel 64 of valve 60 by hinging the two enclosure-halfs 5,5 open about hinge pin 40.
- Knockout elements 17 are removed from the top wall 6 from each enclosure-half.
- Enclosure 55 is then closed with the single panel 20 along one side of one enclosure-half interleaved with the two spaced panels 20 of the other enclosure-half along the side of the enclosure opposite from hinge pin 40. In this condition, the apertures 15 of the two enclosure-halfs form a circular aperture that surrounds yoke structure 62 of valve 60.
- Removal of the knockout elements 17 from the top wall of each enclosure- half forms an opening 19 located centrally of the top of enclosure 55 that surrounds the portion of valve stem 63 which extends above handwheel 64 of the valve.
- the hasp 41 of a lock 42 is inserted through the aligned openings 21 of the three panels 20 along one side of the enclosure 55, following which the hasp is locked to preclude unauthorized removal of enclosure 55.
- the enclosure 55 according to the present invention thereby provides for restricting persons from actuating the valve 60 except when authorized.
- the handwheel 64 can be in an open position, closed position or a throttled position between open and closed when enclosure 55 is placed about the handwheel and locked, to thereby maintain the valve in the position selected by the operator until a change is authorized.
- Enclosure 55 also can be used with a valve having a handle in which the valve stem does not extend beyond the handle. This is illustrated in Fig. 6 by valve 70 having a round handle 71 secured to a valve stem. With this type of installation, the knockout elements 17 of the two enclosure-halfs 5 are left in position on the top wall of each of the two enclosure-halfs. This provides an enclosure 55 with a continuous top wall that covers the outermost surface of handle 71. As described above, valve 70 can be open, closed or throttled between open and closed when enclosure 55 is positioned about handle 71 and locked.
- the present invention provides a clamshell type of enclosure suitable for enclosing and restricting access to the handle of a valve.
- the valve may be a gate valve, a ball valve or any suitable type.
- the new enclosure is formed of two molded plastic enclosure-halfs that are of identical construction. This results in an enclosure for a valve handle which is effective for its intended purpose and yet which can be molded of plastic with reduced tooling and molding costs as compared to other plastic valve guards meant for the same purpose. This also has a beneficial effect of reducing the parts inventory required by a manufacturer of the enclosures.
- each enclosure-half as described above lends additional utility to the device of the present invention in that it is capable of being used with several types of valves, i.e. valves with a valve stem that extends beyond the handle and valves having a handle attached to the end of a valve stem.
- valves with a valve stem that extends beyond the handle and valves having a handle attached to the end of a valve stem.
- This is beneficial to the end user in that a single enclosure structure can accommodate both styles / Z of valves, thereby reducing the end user's inventory requirements and providing additional flexibility of use.
- valve handle enclosure according to the present invention as an illustrative, not limiting disclosure and it is anticipated that those of ordinary skill in the art will be able to devise modifications to the described embodiment that will remain within the true spirit and scope of the present invention.
Landscapes
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Preventing Unauthorised Actuation Of Valves (AREA)
- Mechanically-Actuated Valves (AREA)
Abstract
Enveloppe pour manette de vanne, formée de deux demi-enveloppes (5) de structure identique articulées pour former une enveloppe à deux mâchoires (55) destinée à la manette de la vanne.Casing for valve handle, formed by two half-casings (5) of identical structure articulated to form a casing with two jaws (55) intended for the handle of the valve.
Description
Claims
Applications Claiming Priority (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US07/679,384 US5092359A (en) | 1991-04-02 | 1991-04-02 | Handle enclosure for valves |
US679384 | 1991-04-02 | ||
PCT/US1992/001998 WO1992017723A1 (en) | 1991-04-02 | 1992-03-12 | Handle enclosure for valves |
Publications (2)
Publication Number | Publication Date |
---|---|
EP0578770A1 true EP0578770A1 (en) | 1994-01-19 |
EP0578770B1 EP0578770B1 (en) | 1996-05-08 |
Family
ID=24726707
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP92910690A Expired - Lifetime EP0578770B1 (en) | 1991-04-02 | 1992-03-12 | Handle enclosure for valves |
Country Status (5)
Country | Link |
---|---|
US (1) | US5092359A (en) |
EP (1) | EP0578770B1 (en) |
CA (1) | CA2062131C (en) |
DE (1) | DE69210598T2 (en) |
WO (1) | WO1992017723A1 (en) |
Families Citing this family (44)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US5238141A (en) * | 1992-09-08 | 1993-08-24 | Callegari Peter C | L.P. tank locking cover |
US5415017A (en) * | 1994-08-01 | 1995-05-16 | Brady Usa, Inc. | Locking device for a lever operated valve |
US5950462A (en) | 1994-10-03 | 1999-09-14 | Neelchine Engineering, Inc. | Lockout device |
US6382001B1 (en) | 1994-10-03 | 2002-05-07 | Neelchine Engineering, Inc. | Keyless lock for lockout device |
US6070442A (en) * | 1994-10-03 | 2000-06-06 | Neelchine Engineering, Inc. | Lockout device |
US6038893A (en) * | 1994-10-03 | 2000-03-21 | Neelchine Engineering, Inc. | Lockout device |
DE29518178U1 (en) * | 1995-11-16 | 1996-01-18 | Roder, Günter, 86399 Bobingen | Safety device for a valve |
US5649437A (en) * | 1996-01-29 | 1997-07-22 | Royka, Jr.; Edward | Lockable cover for threaded spout |
US5590682A (en) * | 1996-03-28 | 1997-01-07 | Fischer; Christopher D. | Water faucet rotation prevention device |
US5806555A (en) * | 1997-01-31 | 1998-09-15 | Spears Manfacturing Co. | Locking device for valves |
US5868242A (en) * | 1997-07-23 | 1999-02-09 | Brady Corporation | Toggle switch lockout device |
US6123098A (en) * | 1998-11-06 | 2000-09-26 | Gremillion, Iii; Jack P. F. | Valve cover |
AU760843B2 (en) * | 1999-01-05 | 2003-05-22 | Gregory Peter Ballarino | Tap safety restraint |
USD416983S (en) * | 1999-03-30 | 1999-11-23 | Swagelok Company | Handle of a valve |
US6089257A (en) * | 1999-05-18 | 2000-07-18 | Brooklyn Guard, Inc. | Radiator/convector valve guard |
US6206033B1 (en) * | 1999-06-01 | 2001-03-27 | Taiwan Semiconductor Manufacturing Company, Ltd. | Valve safety lockout and method for using |
US6068020A (en) * | 1999-07-23 | 2000-05-30 | Sammons; James E. | Gas line safety device |
GB2352795A (en) * | 1999-07-31 | 2001-02-07 | Burton Chambers Roderick Lloyd | Security apparatus for valve |
US6119718A (en) * | 1999-08-24 | 2000-09-19 | Cappuccio; Louis W. | Cylinder valve safety cover |
US6145534A (en) * | 2000-01-21 | 2000-11-14 | Romero; Shawna | Scald guard |
US6871518B2 (en) * | 2001-10-23 | 2005-03-29 | Engineered Controls International Inc. | Gas system component inlet or outlet connection retaining bracket |
US20030106896A1 (en) * | 2001-12-07 | 2003-06-12 | West Curtis W. | Inlet fill connection protector |
ITRE20020001A1 (en) * | 2002-01-08 | 2003-07-08 | Marconi S R L | WARRANTY DEVICE |
US7752876B2 (en) * | 2003-01-14 | 2010-07-13 | Master Lock Company Llc | Lockout device |
CN100416723C (en) * | 2003-01-14 | 2008-09-03 | 总锁公司 | Lockout device |
US7478646B2 (en) * | 2003-01-31 | 2009-01-20 | Terry Borrenpohl | Valve outlet enclosure device |
US6997420B2 (en) * | 2003-09-03 | 2006-02-14 | Panduit Corp. | Pneumatic lockout device |
US7207198B2 (en) * | 2004-08-27 | 2007-04-24 | Brady Worldwide, Inc. | Valve lockout assembly |
US7178546B2 (en) * | 2004-10-04 | 2007-02-20 | Linelox, Llc | Valve cover |
US20090025799A1 (en) * | 2006-07-20 | 2009-01-29 | Antonio Thor Fraser | Faucet Locking Device |
EP2229299A2 (en) * | 2007-11-27 | 2010-09-22 | Hi-g-tek Inc. | Apparatus for locking gas canisters |
CA2615184A1 (en) * | 2007-12-05 | 2009-06-05 | Paul M. Smith | Scotia loc |
CA2809583A1 (en) * | 2010-08-27 | 2012-03-01 | Master Lock Company Llc | Lockout device |
WO2012058697A1 (en) * | 2010-10-29 | 2012-05-03 | Patrick Ellan Steenkamp | Gas cylinder safety device |
US8979559B2 (en) | 2011-12-14 | 2015-03-17 | Cooper Technologies Company | Lockout tagout plug sleeve |
USD755351S1 (en) * | 2015-06-05 | 2016-05-03 | Rufus A. Parker | Valve lock |
US20170051843A1 (en) * | 2015-08-18 | 2017-02-23 | Moein Azizgolshani | Method for Managing Water Consumption in Commercial and Residential Buildings |
US10145492B2 (en) * | 2016-07-14 | 2018-12-04 | Surelock, Llc | Valve lockout device with viewing port and method |
USD860401S1 (en) | 2016-08-25 | 2019-09-17 | Brady Worldwide, Inc. | Valve lockout |
USD939668S1 (en) | 2018-02-14 | 2021-12-28 | Loto Safety Products Dmcc | Wheel valve lockout device |
US11491082B2 (en) * | 2018-08-21 | 2022-11-08 | Bioflex Solutions, Llc | Cover for drug product bottles |
WO2020056488A1 (en) * | 2018-09-19 | 2020-03-26 | Intelligent Wellhead Systems Inc. | Apparatus, system and process for regulating a control mechanism of a well |
US11942301B2 (en) * | 2020-02-21 | 2024-03-26 | Jendyk Manufacturing, Inc. | Removable lawn mower PTO switch cover |
CA3191897A1 (en) | 2020-08-20 | 2022-02-24 | Brady Worldwide, Inc. | T-handle ball valve lockout |
Family Cites Families (15)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US280912A (en) * | 1883-07-10 | Valyes | ||
US725260A (en) * | 1902-10-29 | 1903-04-14 | Martin Silberstein | Washing-machine. |
US1691542A (en) * | 1926-03-24 | 1928-11-13 | Norco Mfg Co | Valve seal for revoluble-stem valves |
US1948966A (en) * | 1931-11-04 | 1934-02-27 | Jaeger Gebhard | Valve protector for gas containers |
DE808661C (en) * | 1950-03-03 | 1951-07-16 | Karl Baingo | Safety device for valves |
US2838064A (en) * | 1956-05-14 | 1958-06-10 | Charles E Schieberl | Safety guard for valves |
US3982681A (en) * | 1975-03-10 | 1976-09-28 | Alton Box Board Company | Paperboard hogshead |
US3980099A (en) * | 1975-06-11 | 1976-09-14 | Custom Iron & Specialties, Inc. | Valve guard |
FR2437558A1 (en) * | 1978-09-29 | 1980-04-25 | Pont A Mousson | Tamperproof cover for thermostat of central heating radiator - consists of two identical shell halves which snap together using mating claws and recesses |
US4254888A (en) * | 1979-08-13 | 1981-03-10 | Chandler James D | Locking gas tank cap |
US4301828A (en) * | 1979-12-17 | 1981-11-24 | Martin Jr Timothy J | Protective cover device |
US4405161A (en) * | 1981-06-09 | 1983-09-20 | A. Steven Young | Wellhead security apparatus |
EP0101217A3 (en) * | 1982-08-07 | 1985-05-15 | P.M. Plasmatic (Leicester) Limited | Improvements in or relating to valve cap devices |
US4516414A (en) * | 1983-04-05 | 1985-05-14 | Woolvin Samuel C | Security locking device for outdoor water faucets |
DE9107429U1 (en) * | 1991-06-17 | 1991-07-25 | ARI-Armaturen Albert Richter GmbH & Co KG, 4815 Schloß Holte-Stukenbrock | Control valve with an adjustment-protected handwheel |
-
1991
- 1991-04-02 US US07/679,384 patent/US5092359A/en not_active Expired - Lifetime
-
1992
- 1992-03-02 CA CA002062131A patent/CA2062131C/en not_active Expired - Lifetime
- 1992-03-12 WO PCT/US1992/001998 patent/WO1992017723A1/en active IP Right Grant
- 1992-03-12 EP EP92910690A patent/EP0578770B1/en not_active Expired - Lifetime
- 1992-03-12 DE DE69210598T patent/DE69210598T2/en not_active Expired - Lifetime
Non-Patent Citations (1)
Title |
---|
See references of WO9217723A1 * |
Also Published As
Publication number | Publication date |
---|---|
CA2062131C (en) | 2000-11-07 |
EP0578770B1 (en) | 1996-05-08 |
DE69210598T2 (en) | 1996-12-05 |
DE69210598D1 (en) | 1996-06-13 |
WO1992017723A1 (en) | 1992-10-15 |
US5092359A (en) | 1992-03-03 |
CA2062131A1 (en) | 1992-10-03 |
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Legal Events
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